Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 268: | \[{7^{268}-1\over6}\] | 24 × 52 × 269 × 3217 × 20771 × 228337 × 4591913 × 147300841 × 206244761 × 39144122221793<14> × 27982218262152281<17> × 6557750853567755279<19> × 383942665465635068312581125821527<33> × 10052011757370829033540932021825161<35> × 804306663862573118378356240292749022674214720777202165810697852844101<69> |